From the ReadMe file: This is an application that will "Emulate" how your XMB will look on your computer before making a theme This application will let you view your XMB and it's icons, backgrounds and colors. This application is meant to help you preview your XMB with making the theme! it will read BMP files and will arrange them so they look just like your XMB.

You will findXMB Two. XMB Two stores files That will make the xmb icons and wallpapper

1- Make some icons with a white background, and or whatever background matches the wallpapper with dimension 64X64 and in the BMP format
2- Make some wallpaper images in the BMP format and with dimension 640x480
3- Rename icons to: